Because you like A.J. Soprano in The Sopranos
Mac is a karate-chopping, beer-chugging schemer. See them in It's Always Sunny in Philadelphia .
Daphne Blake's unfailing enthusiasm keeps the team's morale up even as they're battling evil spirits and other ghouls. See them in Scooby-Doo.
In Dennis Reynolds' mind, only a psycho wouldn't have a six-part system to bring home women. And he should know. See them in It's Always Sunny in Philadelphia .
Lily Aldrin is a flaky but supportive kindergarten teacher and painter. See them in How I Met Your Mother.
Just call Jeff Lebowski The Dude. Or His Dudeness, Duder, or El Duderino if you're not into that whole brevity thing. See them in The Big Lebowski.
Turanga Leela is the daughter of two mutants who live in the sewers below New York City. See them in Futurama.
Danny Zuko's car is auto-matic. Its system-matic. Its hyyyyydro-matic. Why, its greased lightning! See them in Grease.
A karate master/rocket scientist/squirrel, Sandy Cheeks is the only one who can clean up the other resident's messes in Bikini Bottom. See them in SpongeBob SquarePants.
Moe Szyslak is the crabby owner of the grimiest bar in Springfield. See them in The Simpsons.